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134 lines
2.9 KiB
C
134 lines
2.9 KiB
C
/* libmumblelink.c -- mumble link interface
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Copyright (C) 2008 Ludwig Nussel <ludwig.nussel@suse.de>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#ifdef WIN32
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#include <windows.h>
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#define uint32_t UINT32
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#else
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#include <unistd.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#endif
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#include <fcntl.h>
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#include <inttypes.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include "libmumblelink.h"
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typedef struct
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{
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uint32_t uiVersion;
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uint32_t uiTick;
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float fPosition[3];
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float fFront[3];
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float fTop[3];
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wchar_t name[256];
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} LinkedMem;
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static LinkedMem *lm = NULL;
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#ifdef WIN32
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static HANDLE hMapObject = NULL;
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#else
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static int32_t GetTickCount(void)
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{
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struct timeval tv;
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gettimeofday(&tv,NULL);
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return tv.tv_usec / 1000 + tv.tv_sec * 1000;
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}
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#endif
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int mumble_link(const char* name)
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{
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#ifdef WIN32
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if(lm)
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return 0;
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hMapObject = OpenFileMappingW(FILE_MAP_ALL_ACCESS, FALSE, L"MumbleLink");
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if (hMapObject == NULL)
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return -1;
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lm = (LinkedMem *) MapViewOfFile(hMapObject, FILE_MAP_ALL_ACCESS, 0, 0, sizeof(LinkedMem));
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if (lm == NULL) {
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CloseHandle(hMapObject);
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hMapObject = NULL;
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return -1;
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}
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#else
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char file[256];
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int shmfd;
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if(lm)
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return 0;
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snprintf(file, sizeof (file), "/MumbleLink.%d", getuid());
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shmfd = shm_open(file, O_RDWR, S_IRUSR | S_IWUSR);
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if(shmfd < 0) {
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return -1;
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}
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lm = (LinkedMem *) (mmap(NULL, sizeof(LinkedMem), PROT_READ | PROT_WRITE, MAP_SHARED, shmfd,0));
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if (lm == (void *) (-1)) {
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lm = NULL;
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}
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close(shmfd);
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#endif
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mbstowcs(lm->name, name, sizeof(lm->name));
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return 0;
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}
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void mumble_update_coordinates(float fPosition[3], float fFront[3], float fTop[3])
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{
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if (!lm)
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return;
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memcpy(lm->fPosition, fPosition, sizeof(fPosition));
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memcpy(lm->fFront, fFront, sizeof(fFront));
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memcpy(lm->fTop, fTop, sizeof(fTop));
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lm->uiVersion = 1;
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lm->uiTick = GetTickCount();
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}
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void mumble_unlink()
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{
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if(!lm)
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return;
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#ifdef WIN32
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UnmapViewOfFile(lm);
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CloseHandle(hMapObject);
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hMapObject = NULL;
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#else
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munmap(lm, sizeof(LinkedMem));
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#endif
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lm = NULL;
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}
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int mumble_islinked(void)
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{
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return lm != NULL;
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}
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